Chemistry
Neither Liquid nor Gas: Supercritical Fluid
A supercritical fluid is a substance pushed past its critical point, where the line between liquid and gas disappears. This article explains what the critical point means, the flui
Chemistry
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Chemistry
A Solid That Vanishes Without Melting: Sublimation
Sublimation is the process in which a solid turns directly into a gas without passing through the liquid state. This article covers the principle and conditions behind it, everyday
Chemistry
Why Ice Forms Later: Freezing Point Depression
Freezing point depression is the lowering of a liquid’s freezing temperature when other substances are dissolved in it. We look at why dissolved particles slow ice formation, why t
Chemistry
Light That Blooms Without a Flame: Chemiluminescence
Chemiluminescence is the phenomenon in which energy released by a chemical reaction comes out as light instead of heat. This piece covers how excited molecules produce this ‘cold l
Chemistry
Chemistry’s Bundle for Counting Atoms: Avogadro’s Number
Avogadro’s number is the number of particles in one mole of a substance, about 6.02 × 10²³. This piece explains what it means, ways to grasp its size, how Avogadro, Cannizzaro, Los
Chemistry
The Hill Every Reaction Must Climb: Activation Energy
Why don’t books on a shelf catch fire by themselves? Reactions must first climb an energy hill called activation energy. This piece covers the Arrhenius equation, why heat speeds r
Chemistry
Water Moving Across a Single Membrane: Osmosis
Why does salted cabbage release its water overnight? This article covers what osmosis is, the three factors that drive it, everyday examples, and reverse osmosis, the technology th
Chemistry
Water That Doesn't Freeze When It Should: Supercooling
Why does water sometimes stay liquid below freezing? This article explains what supercooling is and how it works, everyday examples such as clouds, freezing rain, and hand warmers,
Chemistry
Mirror-Image Twin Molecules: Chirality
Chirality is the property of an object or molecule that cannot be superimposed on its own mirror image. This article covers the basic definition of chirality, how mirror-image mole
Chemistry
The Force That Restores Balance: Le Chatelier's Principle
Le Chatelier's principle states that when a system at chemical equilibrium is disturbed by a change in concentration, pressure, or temperature, the equilibrium shifts in the direct
Chemistry
Key Effects of Metabolic Processes on Health and Disease
Metabolism is an essential process that supports all physiological functions in living organisms, playing an important role in maintaining and regulating life activities through va
Chemistry
Efficient Chromatography Techniques and the Principles of the Separation Process
An in-depth look at chromatography, an essential tool in chemical analysis: its basic principles and history, major techniques such as HPLC, GC, IC, SEC, and paper and thin-layer c